ndogg

I have run the hankook TD which is supposed to be the same compound as the z214. I thought they were very sticky. They cycle out pretty fast though (faster than R1S). One problem with the z214 is that they are undersized or I would probably be running that tire next year. I may still try them. The TD on the other hand are oversized. I wish there was more data out there on the hankooks.

I don't have a good comparison because I am still a developing driver and I ran the TD almost 2 years ago. Here are my data points anyway (from high plains raceway). All on 9" rims.

2:04 on 255 TD (2 years ago)
2:05 on 255 NT01 (current)
2:03 on 225 R1S (current)

The TD were garbage after about 12 HC. My current set of 225 R1S can still pull 203 on 16th heat cycle. I think the TD would be 203 range if I ran them now...

I am thinking for next year one of the following (for TTC)
255 TD
255 R1
245 R7
245 z214 (although I think the TD may be faster since it is so much bigger)

dan_uk

You know what looing at it again I would reclass to TTC* probably you could get about 220HP in the mid/upper 2700lbs which I think its a sweetspot for my car

+5 shocks/springs
+4 Wing
+3 225 R7
+7 *

19 points

dc50818

Gonna run ttb next year and see how it goes if i am not competitive at all then ill pull all the aero off and dyno reclass and run ttc

patinum

Bumping.

Looks like the PT rules are out: https://nasa-assets.s3.amazonaws.com....1--1-1-15.pdf

Biggest change, aside from tires, seems to be:

22) Modification, porting, or replacement of the BMT exhaust manifold or header(s) (includes
any/all other exhaust and catalytic converter modifications) +5
23) Any modification to the BTM exhaust piping and/or catalytic converter (includes muffler
modification or replacement) +3
24) Non-BTM or modified resonator(s) or muffler(s) only (no exhaust piping modifications) +1

Seems like a big jump to me. It mentions catalytic converter modification in 22 and 23. So what happens if you have both? Not that it really matters to me as I'll be doing dyno reclass. But still. If I'm reading this right:

- Header, test pipe, exhaust = 8 (previously 5)
- Header, test pipe, oem-exhaust piping with aftermarket mufflers = 6 (previously 5)
- Test pipe, exhaust = 3 (previously 3)
- Test pipe = 3 (previously 1)
- exhaust = 3 (previously 2)
- replace oem mufflers only (including straight pipes) = 1 (previously 2). Not a bad deal for weight savings

Additional question - anyone think there is a benefit to running a 275 Maxxis RC1? Or do you think it's diminishing returns larger than 255?

s2000ellier

I never believed a header made power on the car anyway, it does cut some weight tho.

No basis for saying this but I think a 275 _could_ be faster than a 255.

BlueBarchetta

Line 22 means header-TP-exhaust together =5

Basically if you do header, you might as well do the other.

23 means you get the exhaust and TP for 3 points

24 means the only 1 point mod available is resonator/muffler (only)

s2000ellier

wasnt a header always 2 pt before?

so do 22 and 23 stack? 22 reads like they dont but then 23 starts off like it covers any changes to piping

patinum

That makes more sense. So TP + exhaust is the same points as before. Header + tp + exhaust is the same points as before. If you do header, might as well do full exhaust. No reason to just do a header without exhaust. No reason to do just a test pipe without exhaust.

s2000ellier - My PLM header made power. I had my tuner tune with just the test pipe and exhaust then install the header and tune from there since I was playing with points. 5hp at peak. 7hp in the midrange. 2006 with hondata flashpro.

s2000ellier

i should have specified significant power i guess

7hp for 2 points, not sure if thats worth it


edit: for me i mean

AP1 no free tunes

patinum

5hp is a lot in an S2000 power to weight goes from 12.95 to 12.67!!!!lol!!!

The midrange is really nice though. Not worth the points but worth the dyno reclass.